Fruit evaporator



July 9, 1929. M. P. SMITH Re. 17370 I FRUIT EVAPORATOR 1 I Original Filed Feb. 25, 1924 FI 5 v G- 3 I .INVENTOR MARY P SMH'H.

( $44 M.( Z. M

- ATTORA'IEY it) are given the proper consistency.

55 and sides 4.

Retained July 9, 1929.

' UNITED STATES- PATENT. OFFICEQ j v HAIB'Y PARKER, SMITH, 01 DENVER, COIDBLDO.

rnor'r EVAPOBA'IOB.

011811111110. 1,538,857, dated-Kay 26, 1925, Serial No; 694,870, filed February 25,

reissue filed'llay 26, 1827. Serial No. 194,592.

This invention relates to evaporators' for vfruits. a

In many parts of the country, where fruit is available, it is customary for housewives I 6 to prepare preserves, jellies and similar food products. In places'where there issuificient. sunshine the fruit is exposed to the suns rays whereby the liquidcontained therein is evaporated to's uch an extent that the preserves In the ordinary method of evaporatiomthe time required often runs into days, three days being frequently necessary. 7

With my improved evaporator I have been able to obtain the required evaporation in three hours and to a get a better roduct than has heretofore been: obtained in t ree days.v My invention resides in the peculiar construction of my evaporator, which, briefly I described,- consists of a box of substantially rectangular construction and formed of any suitable material such as porcelain, pyrex, enameled metal or aluminum. The box is 1 higher on one end than the other and the sides connecting the ends are inclined. The

upper edge of both sides and ends have a rabbet along the inside for the reception of a glass cover. Along the inner surface of the lower end is a tter which extends the entire'width of the 0x and serves to receive .the water that condenses on the inner surface of the glass cover. a My invention can be best described and will be most readily understood when reference 5' is Iliad to the accompanying drawing in which the preferred embodiment thereof is. shown, and in which:

' Figure 1 shows a perspective view of the gporatorg a v igure 2 isa topplan view thereof;

' Fi re 3 is a section taken on the line 3- -3 of Figure 2; y a Figure 4 is a section taken on the line 4+4 of Figure 2;'and i 5 F1gure 5 1s asectlon on the line 5-5 of Figure 2, showing the parts on an enlarged sea a My improved evaporator may be made of any suitable material, as noted above, but

o has b'een. shown as constructed from sheet aluminum. The evaporator is preferably miuare or rectangular with rounded corners,

a though it may e made round or any other; shape and has a bottom 1, end walls2 and 3,

'a'short distance above thelower ed 1 secured to the opening. p u r The end 2,'which is opposite end 3, ishigher The bottom is secured to the sides'and ends 7 e of the latter .so'that'it will-be spaced a short dis tance from any flat surface uponwhich the evaporator may be laced. The end 3 hassecured to the outsi e thereof near'itsupper edge a gutter 5 whose upper edge is'ofi'set as shown at 6 in Figure 5. The gutter has an opening in its bottom "and a short tube 7 is and is joined to the latter by sides 4. The

v u get edge of the sides and the end 2 are pro ed with an oifset similar to that indicated I by'6inFigure5. p v Q A glass plate 8 of the proper size is formed to fit snugly within vertical edges of the OE- 1924. Application for set portions and to rest upon the shoulder* I 9. The end '3 is of such hei ht that it does I not quite reach the undersi e of the glass.

Figure 3); This permits water that conenses on the under side of the glass'to flow downwardly and into the gutter, from which it escapes through the tube 7 When my devlce is to be used for the preparation of preserves, for example straw-.

berry reserves, the berries and the sugar are s11 jected to heat and brought to a boil. They are thenplaced within my evaporator and the glass cover put in place. The evaporator is then placed in the sun so that the suns rays strike the glass; The action ofthe 'suns rays causes the liquid to evaporate quite rapi 1y.

p The evaporator and contents are left exposed to the sun until the preserves-reach the proper consistency. The vapors that arise from the preserves condense on the inside of The rapid action of the glassand flow down'wardandout in the manner'explained.

lieved to be dueto the fact that the glasscom serves the heat and to the additional fact that the vapors are condensed and carried-away.

vIt. is evident that if the preserves were placed in='a-contai'ner and covered by a glass and no provision made for removing the moisture, the a1r would soon become saturated and the evaporation cease. -It is-veryimportanttherefore that the glass be provided with a gutter-for receiving the condensed moisture, as by this means it is pos:,

1 cover shall be inclined and that the box shall a Having now described my invention, what I claim as new is:

1. A device of the character described-including a pan covered by an inclined glass top, said pan having a side wall thereof approximately shorter than theopposite side wall thereof and terminating at a point below the glass top providing a space therebetween, said glass top extending through said space and a gutter secured to the shorter side wall exteriorly thereof and communicating with the interior through the space for receiving water of condensation from the glass top.

2. A fruit preservator comprising a boxlike casinghaving an inclined glass top, a gutter applied exteriorly to the top portion of the shorter upright side wall of the structure, the lower portion of the glass top projecting laterally beyond the said wall and overhanging the gutter, the said wall being shortened at the top to leave a space between its upper edge and the glass cover, said space establishing communication between the casing chamber and the gutter, the outer wall of the gutter extending upwardly above the inner wall thereof and forming a support for the adjacent overhanging part of the glass top, and forming therewith atight joint, the gutter having an outlet for water of evaporation which passes thereto from the under surface of the glass.

3. A fruit preservator comprising a boxlike casing, including an inclined glass top, a gutter applied to the top portion of the upright side wall of the casing, the lower portion of the glass top projecting laterally beyond the inner surface of said wall and overhanging the gutter, the inner edge of the gutter being spaced from the glass cover, the outcr wall of the gutter merging with the wall of the casing and forming a support for the adjacent overhanging part of the glass top, the gutter having an outlet for water of evaporation which passes thereto from the under surface of the top.

4:. A sun cooker comprising a casing adapted to hold liquids and including a side wall and a glass top, the top port-ion of the side wall having a gutter provided with an outlet for water of evaporation which passes thereto from the under surface of the top, the lower portion of the top projecting laterally beyond the inner surface of said wall and overhanging the gutter, the inner edge ofthe gutter being spaced from the top, the out-er wall of the gutter merging with the wall of the casing and forming a support for the adjacent overhanging part of the top.

5. A solar cooker comprising a receptacle having the sides and bottom thereof permanently closed and adapted to receive and re tain fluid material, a transparent cover for COVel'.

7. An evaporator of the character described comprising a receptacle having a side wall, a transparent cover for said receptacle, said receptacle having an opening between the side wall and the cover, and a gutter disposed along the side wall externally thereof and in relatively close proximity with the cover for receiving products of condensation from said cover.

In testimony whereof, I affix my signature.

MARY PARKER SMITH. 

